View source for Redhat:Email defs

== Mail Servers ==

There are four main parts to a mail server, the MTA, the MUA, the MDA and the MSA. 

{|
|-
| MTA || Mail Transfer Agent || Postfix, sendmail, dovecot
|-
| MUA || Mail User Agent || mutt, Evolution, thunderbird
|-
| MDA || Mail Delivery Agent || procmail
|-
| MSA || Mail Submission Agent || Postfix, sendmail
|-
|}

== Protocols ==

There are three main protocols used for Email Servers: SMTP, POP3 and IMAP4.